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Finding the Fourth Proportional to 257,275.29, 354,926.73 and 155,243.88

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Solution

The fourth proportional to 257,275.29, 354,926.73 and 155,243.88 is: 214,168.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,275.29 : 354,926.73 = 155,243.88 : x
  2. Step 2: Convert to fraction form
    257,275.29/354,926.73 = 155,243.88/x
  3. Step 3: Cross multiply
    257,275.29x = 354,926.73 × 155,243.88
  4. Step 4: Simplify right side
    257,275.29x = 55,100,202,680.91
  5. Step 5: Solve for x
    x = 55,100,202,680.91/257,275.29
  6. Step 6: Final answer
    x = 214,168.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.